Outlet member for electrical conduits.



No. 694,806, Patented Mar. 4, 1902 V V 8. Link. THOMAS, 'OUTLETVMEMBER Fan ELECTRICAL conuun's.

WINE

ROBERT MCK. THOMAS, OF NEW YORK, N. Y., ASSIGNOR TO THOMAS AND BETTS, OF NEW YORK, N. Y., A FIRM.

OUTLET MEMBER FOR ELECTRICAL CO NDUITS.

PECIFIUATI N formingpart of Letters Patent No. 694,806, dated March 4, 1902.

Application filed January 26, 1901. Serial 1%. 44,817. (No model.)

To all whom it may concern.

Be it known that I, ROBERT MoK. THOMAS, of New York, N. Y., have invented certain Improvements in Outlet Members for Electrical Conduits, of which the following description, in connection with the accompanying drawings, isa specification, like numerals on the drawings designating like parts.

This invention has for its object the production of an outlet member for electrical conduits or pipes, the same to be of stronger and more compact construction than those at present in use, easy of application, and not subject to deterioration when in place.

In accordance with my invention the outlet member will be formed of solid metal, preferably an alloy of lead and antimony, since this material presents a combination of desirable qualities, being easily worked, but less subject to deformation under rough handling than lead alone and enabling the formation of a cleaner thread in the attaching portion.

In the drawings, Figure 1 illustrates in vertical section an outlet member constructed in accordance with my invention and applied to the junction of a pipe or conduit with an out let-box, of which only a part is shown. Fig.

2 is a plan view of the form of nipple shown,

in Fig. 1; Fig. 3, a sectional view of a nipple similar to that shown in Fig. 1, but provided with a coating of enamel; and Figs. 4 and 5, views in side elevation (partly in section) and plan, respectively, of a modified form of nipple.

In the embodiment of my invention selected as a convenient form for illustration and description to enable a ready understanding of my improvements the reference-numeral 1 designates the portion of the outlet member which is designed to overlap the walls of the pipe or conduit 2, and this is formed integral with the body 3 of the outlet, arranged to surround a portion of the end of the pipe or conduit exteriorly and engage a thread 4: therein the nipple being threaded interiorly at 5.

The mouth of the outlet flares outwardly from the lip 1 and may present a rounded face 6 of circular circumference, as illustrated in Figs. 1 and 2, hexagonal, as illustrated in Figs. 4 and 5, or of any desired and suitable contour. At 9 I have shown one wall of an outlet-box or similar device, into which pipes are often led, and at 8 a check-nut which with the outlet member embraces the wall and holds the pipe in place relatively thereto. of which, the device is .mademay also be varied as desired and found suitable, and if additional precaution against deterioration of the smoothness of the mouth is desirable a coating of enamel, varnish, or other protective material may be applied to the device. This coating may extend over any desired area of the surface of the member except the base, left free to insure electrical connection between the pipe and outlet-box, and, if desired, may be of an insulating nature, and in Fig. 3 I have shown such a coating 10 of enamel applied to the mouth of the outlet member. 1

I find, as already stated, that an alloy of lead and antimony is a suitable material of which to make the device, being workable, tough, not subject to deformation or corrosion, free from burs, fins, or projections lia ble to injure insulation on wires, and presenting a good appearance. Malleable iron also constitutes a material presenting advantages in some situations, and other materials will be found to meet special conditions, for it will be understood that I do not limit myself to the specific materials named nor to the exact shapes illustrated nor in general otherwise than as pointed out in the claim taken in connection with this specification.

Having thus described my invention, what I claim, and that on which I desire protection, is-- An outlet member consisting of a sleeve of solid metal and having an interiorly-threaded attaching portion, a lip to extend over the walls of the pipe end, a flaring mouth, and a protective coating of enamel, upon the sur face of said mouth, the base of said member being free from enamel to insure electrical connection between the pipe and the outletbox which the latter may enter.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ROBERT MCK. THOMAS.

Witnesses:

ALEXANDER'C. PROUDFIT, HOBART D. Barre.

The metal I 

